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Estimate the value of the expression 38.55 divided by 4.223+0.0234

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X= 38.55/(4.223+0.0234)

Posted on May 01, 2010


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What is 0.62486935191 to the nearest tenth

Since you are using a decimal-based number, it is all in powers of ten. The first number to the left of the decimal point is the "1's" column, the next is the 10's, the next the 100's and so on in powers of ten. To move right of the decimal is to divide each value by a power of 10. So the first digit right of the decimal is the 10ths value, the next is the 100ths value, the next the 1000ths value and so on. To estimate (round) a number to the nearest 10th, you only need to look at the digit to the right of the 10ths digit. Here the 10ths digit is a value of 6. The digit to its right is a value of 2. In order to round up that digit would need to be 5 or greater. Thus the answer here is 6 tenths.

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Use compatible numbers to find two estimate that the quotient is between 1,624 divided by 3

Hi Tammy:
Here's what I would do.
1) 1500 divided by 3 equals 500
that would leave 124
2) 120 divided by 3 equals 40
That leaves 4
3) 4 divided by 3 equals 1
with 1 remaining.
putting the quotients together you get 541
with 1 remaining.
All can be done mentally with no calculator and basic multiplication tables that most school children memorize.

Is this what you were looking for?

Jan 27, 2016 | Computers & Internet

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How do I graph y=4/5x -1 (where 4/5 is 4 over 5, not 4 divided by 5)

Before trying to graph anything lift the ambiguity from the expression. That is what parentheses are for. Besides, there is no difference between 4 over 5 and 4 divided by 5. They mean the same thing.
Look at the screen capture and see how many possible interpretations you can have for your expression.


Use parentheses to enforce your intention.
4/5X-1 gives the first expression on display.
4/(5X-1) gives the second expression
4/5X^-1 gives the third.

To graph, press the MENU key then use arrows to focuss on GRAPH. Press ENTER/EXE
In the Y= editor type in the intended expression after Y1= and press EXE.
Press DRAW.

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2x^3+6x^2-x=3 I know -3 works for x. But so does -or+ square root of 2 divided by 2. I need the steps so I can see how you get -or+ square root of 2 divided by 2. The question says solve for x.

On most calculators with a solver function, you can specify a starting value for the variable (in this case x) after pressing [Solve] but before pressing the = key.

To get the three solutions, try entering the function, pressing [Solve] then an estimated starting point (say 0.5 or 0.7) then [=]. This should show the +root2/2 result (ie 0.7071067812).
You should not need to enter the function again.
Follow this by pressing [Solve] again, then another estimated starting point (say -0.5 or -0.7) then [=] to get the -root2/2 result.
Similarly, then press [Solve] again, and enter another estimated starting point (say -2) then [=] to get the final solution of -3.

On Casio calculators, the [Solve] function is usually found by pressing [Shift][Calc]. Note that the solver function generally won't return numbers in surd form, only as a decimal value.

Jul 07, 2011 | Office Equipment & Supplies

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How do you work out how to find a % of a number on a calculater

a simple way to go about finding a percent value is to divide the new number by the original number. this will in turn give a decimal value. the returned decimal value can easily be converted into a percent (out of 100) value by multiplying by 100.
ie: 2 divided by 3 = .666667, or around 67% 6 divided by 4 = 1.5 or 150%
as far as i know there is no direct function to calculate percentages built into many calculators, although a small few do in fact have that ability.
hope that helps :)

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If x units of a product cost C dollars to make and revenue of R dollars, the value of x where the expression for C and R are equal is called the break even quantity, the number of units that produce zero...

Set C = R
This means 16X - 20000 = 14X
Add -16X to both sides
-20000 = -2X
Divide both sides by -2
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This means that the break even point is 10000 units.

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Explain 1 divided by 0

In mathematics, a division is called a division by zero if the divisor is zero. Such a division can be formally expressed as a / 0 where a is the dividend. Whether this expression can be assigned a well-defined value depends upon the mathematical setting. In ordinary (real number) arithmetic, the expression has no meaning, as there is no number which, multiplied by 0, gives a (a?0).
In computer programming, an attempt to divide by zero may, depending on the programming language, generate an error message or may result in a special not-a-number value (see below).
Historically, one of the earliest recorded references to the mathematical impossibility of assigning a value to a / 0 is contained in George Berkeley's criticism of infinitesimal calculus in The Analyst; see Ghosts of departed quantities.

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How do I get my calculater to and and simplify completely 5xto the third power over 6xyto the second power divided by 10x over 3xy to the fourth power for variable y

The calculator does not have a CAS (Computer Algebra System). Therefore it cannot do symbolic algebra. It can only calculate numerical values.

You can enter algebraic expressions with symbols (X, variable), Y, A,B,C,D, and M but they will just be evaluated with the current values of A, B,C,D, Y, and M. If you use the SOLV program the unknown variable must be X.

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I don't know how to use it for fractions , and decials

any fraction is numerator divided by denominator- on a calculator this is expressed as a decimal value. What is your real question?

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How do enter a lim of function when from one side using nderiv

nDeriv( is valid only for real variables.
The syntax is as follows:
nDeriv ( expression, variable, value, epsilon)

expression: the function the derivative of which you want to calculate
variable: the name of the variable in the expression above (usually x)
value: the numerical value of the e x where you evaluate the derivative
epsilon: the numerical value of the tolerance. Default is 1x10^(-3). But you can change it to a smaller value to obtain a more precise result.

To use default value of epsilon
nDeriv ( expression, variable, value)

To use a different epsilon, ex 1x10^(-4)
nDeriv ( expression, variable, value, 0.0001)

nDeriv( A^3 , A, 5., 0.0001) should give you 75

Hope it helps.

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